Fascists would love us to waste our time debating the precise definition of ' fascism".
Because then we won't be paying any attention to its obvious symptoms and manifestations. Its like pornography, you'll know it when you see it.
Whether its origins are psychological, social, historical, political, economic, cultural, or any or all of the above, singly or in combination, is irrelevant. The point is, its older than Babylon and as evil as Hell. And it saturates the air today like electricity before a thunderstorm.
I really like your alien locust metaphor. But its not the gravid queens I fear here, its the lesser castes, so eager to stroke her pulsing abdomen, tend to her squirming spawn, and fill her tireless maw.